Just one more consultant doing "branding". What causes estimates to fail are the unknowns: unavoidable surprises when implementing something new, unexpected ch

Just one more consultant doing "branding". What causes estimates to fail are the unknowns: unavoidable surprises when implementing something new, unexpected change in requirements, etc. It would be easy to have accurate estimates if there were no unknowns. But every innovative project must always be a march to unknown territory.